Home / 55,327.09-82,970.28-19,778.80

Finding the Fourth Proportional to 55,327.09, 82,970.28 and 19,778.80

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Solution

The fourth proportional to 55,327.09, 82,970.28 and 19,778.80 is: 29,660.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,327.09 : 82,970.28 = 19,778.80 : x
  2. Step 2: Convert to fraction form
    55,327.09/82,970.28 = 19,778.80/x
  3. Step 3: Cross multiply
    55,327.09x = 82,970.28 × 19,778.80
  4. Step 4: Simplify right side
    55,327.09x = 1,641,052,366.64
  5. Step 5: Solve for x
    x = 1,641,052,366.64/55,327.09
  6. Step 6: Final answer
    x = 29,660.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.